Hi All -
Sometimes I’d like to detect the presence or absence of mains voltages (240v AC here). Examples include knowing when my traditional hot-water system is opening or closing a heating valve, or when my outdoor motion sensor is switching on or off the outside light. (It’s a mains-powered unit giving a switched live output.)
I understand the underlying electronics and could build a board myself, but that’s probably too much effort, especially considering the safety requirements.
Anyone know of an easy reasonably-prepackaged solution that could become a binary sensor in HA? I’m guessing a Sonoff Pow would work, but it might be overkill - I don’t need to switch the current or measure anything other than presence or absence of a signal.
Thanks in advance,